Contact Blocks & Light Blocks

Contact Blocks
A contact block is an electrical circuit connector that is used to turn on (make) or turn off (break) an electrical circuit. Contact blocks are commonly found connected to switches, relays and circuit breakers, once these devices are active the contact block allows current to flow and complete a circuit.
Types of Contact Block
Contact blocks are usually designed as an accessory to fit a specific device, therefore matching the correct contact block and device are essential. The contact blocks are available with a wide range of contact configurations that allow the main device to change a circuit in many different ways. Typical contact configurations available are:
• 1NO (One normally open contact)
• 1NC (One normally closed contact)
• 1NO/1NC (One normally open and one normally closed)
• 2NO (Two normally open contact)
• 2NC (Two normally closed contact)
• 2NO/2NC (Two normally open and two normally closed)

Light Blocks
Push button light blocks are an addon block that mount to the rear of a push button switch alongside the contact blocks to act as an indicator light. The light blocks are turned on when the push button is pressed and illuminate through the button head.
Types of Light Block
Light blocks are available in two types:
• LED - These light blocks feature a fixed bright LED that is designed to last the lifetime of the push button. LED light blocks are available in a variety of colours to match the button colour.
• Incandescent - These light blocks feature a changeable incandescent bulb. The bulbs produce a white light that shines through the button head to produce the required colour.

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Description Price Series Block Type Contact Configuration Illumination Colour Voltage Rating Illumination Type Terminal Type Body/Fixing Collar Included Current Rating LED Included For Use With Accessory Type
RS Stock No. 746-9481
Mfr. Part No.ZALVM6
MYR113.26
Each
units
Harmony ZALV Light Block - - 230 → 240V LED Screw No - Yes - -
New
RS Stock No. 211-8549
Mfr. Part No.ZB4BV18B3
MYR134.27
Each
units
ZB4 Light Block - Green 24V LED Screw Clamp - - - - -
RS Stock No. 197-3310
Mfr. Part No.3SU1401-1BG24-3AA0
BrandSiemens
MYR185.66
Each
units
3SU1 Light Block - - 6-24V LED - - - - - -
RS Stock No. 874-2248
Mfr. Part No.3SU1401-1BB40-3AA0
BrandSiemens
MYR59.61
Each
units
SIRIUS ACT Light Block - - 24V ac/dc LED - No 20mA Yes - -
RS Stock No. 193-2763
Mfr. Part No.3SU1401-1BB20-3AA2
BrandSiemens
MYR150.17
Each
units
SIRIUS ACT - - Red - LED - - 20mA Yes - -
RS Stock No. 193-2334
Mfr. Part No.3SU1401-2BF50-3AA0
BrandSiemens
MYR103.63
Each
units
SIRIUS ACT - - - 230V ac LED - - 20mA Yes - -
RS Stock No. 760-4656
Mfr. Part No.115974 & M22-SWD-K11LED-G
BrandEaton
MYR170.77
Each
units
M22 Contact & Light Block 1CO Green - LED - No 15mA Yes - -
RS Stock No. 193-2675
Mfr. Part No.3SU1501-1AG60-1NA0
BrandSiemens
MYR135.28
Each
units
SIRIUS ACT Contact Block - - 6 ... 24V LED Screw - - Yes - -
RS Stock No. 610-2900
Mfr. Part No.ZBVG3
MYR94.99
Each
units
Harmony XB Light Block - - 110 → 120V LED Screw No - - - -
RS Stock No. 189-6650
Mfr. Part No.3SU1400-1AA10-1QA0
BrandSiemens
MYR92.20
Each
units
SIRIUS ACT Contact Block SPDT - 5 → 500V ac/dc - Screw - 10A - - -
New
RS Stock No. 211-8493
Mfr. Part No.XEND1621
MYR347.52
Each
units
XEND Contact Block 2 NO - 240V - Screw Clamp - - - - -
RS Stock No. 401-321
Mfr. Part No.ZB6EM1B
MYR102.322
Each (In a Pack of 5)
units
Harmony XB6 Light Block - White 230/240V ac/dc LED Faston Yes - - - -
RS Stock No. 342-2633
Mfr. Part No.ZB4BW063
MYR90.52
Each
units
Harmony XB4 Contact & Light Block 2NO - 250V - Screw Yes 10A No - -
RS Stock No. 810-3778
Mfr. Part No.216503 & M22-AK01
BrandEaton
MYR35.42
Each
units
M22 Contact Block 1NC - 500V - Screw Yes 4A - - -
RS Stock No. 193-2664
Mfr. Part No.3SU1501-1AG60-1FA0
BrandSiemens
MYR112.16
Each
units
SIRIUS ACT Contact Block - - 6 ... 24V LED Screw - - Yes - -
RS Stock No. 206-5781
Mfr. Part No.101165998
MYR382.56
Each
units
ELDE.NGB24 Light Block - - 24V ac LED Screw - - - - -
RS Stock No. 826-3805
Mfr. Part No.LPXCS10
BrandLovato
MYR26.14
Each
units
Platinum 22mm Contact Block 1NO - 690V - - No 10A - - -
New
RS Stock No. 212-4908
Mfr. Part No.ZB4BV18G4
MYR156.91
Each
units
ZB4 Light Block - Red 110 → 120V LED Screw - - - - -
RS Stock No. 173-6834
Mfr. Part No.3SU1401-2BB20-1AA0
BrandSiemens
MYR57.96
Each
units
SIRIUS ACT Light Block - - 24V ac/dc LED Screw - 20mA - - -
New
RS Stock No. 211-6723
Mfr. Part No.8LM2TC10
BrandLovato
MYR220.76
1 Box of 10
Box(es)
8LM2T Auxiliary Contact Block 1NO - 690V - Screw - - - - -